User Manual Part 1

CY8CKIT-042-BLE Bluetooth® Low Energy (BLE) Pioneer Kit Guide, Doc. # 001-93731 Rev. *A 95
Hardware
5.1.4 Expansion Connectors
5.1.4.1 Arduino Compatible Headers (J1, J2, J3, J4, and J12-unpopulated)
This kit has five Arduino compatible headers: J1, J2, J3, J4, and J12, as shown in Figure 5-8. You
can develop applications based on the Arduino shield's hardware.
Figure 5-8. Arduino Headers
The J1 header contains I/O pins for reset, I/O reference voltage (IOREF), and power supply line. The
J2 header is an analog port that contains I/O pins for SAR ADC, comparator, and opamp. The J3
header is primarily a digital port that contains I/O pins for PWM, I
2
C, SPI, and analog reference. The
J4 header is also a digital port that contains I/O pins for UART and PWM. The J12 header is an
Arduino ICSP compatible header for the SPI interface and is not populated. Refer to the “No Load
Components” section of Bill of Materials (BOM) on page 184 for the header part number.
Additional Functionality of Header J2
The J2 header is a 6×2 header that supports Arduino shields. The Port 2 and Port 3 pins of PSoC 4
BLE and PRoC BLE are brought to this header. The Port 2 pins also connect to the onboard
CapSense slider through 560-ohm resistors. When the CapSense feature is not used, remove these
resistors to help ensure better performance with these pins.
Arduino
compatible
I/O header
(J3/J4)
Arduino
compatible
I/O header
(J3/J4)
Arduino
compatible
I/O header
(J2)
Arduino
compatible
power
header (J1)